Finding the Fourth Proportional to 193,813.02, 290,423.50 and 81,431.80
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Solution
The fourth proportional to 193,813.02, 290,423.50 and 81,431.80 is: 122,023.32
Step by Step Solution
- Step 1: Write the proportion equation
193,813.02 : 290,423.50 = 81,431.80 : x - Step 2: Convert to fraction form
193,813.02/290,423.50 = 81,431.80/x - Step 3: Cross multiply
193,813.02x = 290,423.50 × 81,431.80 - Step 4: Simplify right side
193,813.02x = 23,649,708,367.30 - Step 5: Solve for x
x = 23,649,708,367.30/193,813.02 - Step 6: Final answer
x = 122,023.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.